[18p-E208-1~13] 4.1 Plasmonics and Nanophotonics

▼ [18p-E208-10] TiO₂ Branched Nanorods-Modified ZnO Nanorods Decorated with Au Nanoparticles for Plasmon-Enhanced Photoelectrochemical Water Splitting

〇(M1)ShangHau Chiou¹, ChunHway Hsueh¹ (1.NTU)

Keywords:Semiconductor photocatalyst, Photoelectrochemical Water Splitting

In this study, we used atomic layer deposition (ALD) to grow ZnO and TiO₂ seed layer and then used hydrothermal synthesis method to obtain ZnO nanorods (NRs) arrays and anatase-TiO₂ branched nanorods (b-NRs) arrays. Finally, a layer of 5 nm-thick Au film was deposited by e-beam evaporator to form agglomerated Au nanoparticles on b-NRs TiO₂@ZnO to complete the Au-NPs@b-NRs TiO₂@ZnO system. Consequently, Au-NPs@b-NRs TiO2@ZnO system exhibits outstanding photoactivity. This high performance PEC water splitting application is attributed to the synergistic effects of the enhanced visible light absorption, resulting from LSPR of Au-NPs, and the increased separation of photogenerated electron-hole pairs.